import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '@/components/Login.vue'
import Rights from '@/components/power/Rights.vue'
import Roles from '@/components/power/Roles.vue'
import Cate from '@/components/goods/Cate.vue'
import Params from '@/components/goods/Params.vue'
import GoodList from '@/components/goods/List.vue';
import GoodAdd from '@/components/goods/Add.vue';
import Order from '@/components/order/Order.vue';
import Report from '@/components/report/Report.vue';

// 路由懒加载
const Home = () => import('@/components/Home.vue')
const Welcome = () => import('@/components/Welcome.vue')
const Users = () => import('@/components/user/Users.vue')
Vue.use(VueRouter)

const routes = [
  { path: '/', redirect: '/login' },
  { path: '/login', component: Login },
  {
    path: '/home', component: Home, redirect: '/welcome',
    children: [
      { path: '/welcome', component: Welcome },
      { path: '/users', component: Users },
      { path: '/rights', component: Rights },
      { path: '/roles', component: Roles },
      { path: '/categories', component: Cate },
      { path: '/params', component: Params },
      { path: '/goods', component: GoodList },
      { path: '/goods/add', component: GoodAdd },
      { path: '/orders', component: Order },
      { path: '/reports', component: Report }


    ]
  }

]

const router = new VueRouter({
  routes,
  mode: 'history'
})

// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  //to将要访问的路径
  // from代表从哪个路径跳转而来
  // next是一个函数，表示放行
  //    next() 放行  next( " /login ')强制跳转
  if (to.path === '/login') return next()
  let tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('/login')
  next()

})
export default router
